bisecting fixing commit since 521b619acdc8f1f5acdac15b84f81fd9515b2aff
building syzkaller on 64069d48f293e0be98d4a78a6f7be23861cc1e06
testing commit 521b619acdc8f1f5acdac15b84f81fd9515b2aff with gcc (GCC) 8.1.0
kernel signature: e82ac0dd0fdca511f32070c01ddc9c342133a00c9af9fe9e6f175347ba5b2297
all runs: crashed: kernel BUG at fs/reiserfs/prints.c:LINE!
testing current HEAD 0477e92881850d44910a7e94fc2c46f96faa131f
testing commit 0477e92881850d44910a7e94fc2c46f96faa131f with gcc (GCC) 8.1.0
kernel signature: 99073b8cdb31ef016a6e2f17948910a4a016f932e54d802c76e22ababcfcb9c6
all runs: crashed: kernel BUG at fs/reiserfs/prints.c:LINE!
revisions tested: 2, total time: 14m48.04979251s (build: 8m47.049273092s, test: 5m37.737926348s)
the crash still happens on HEAD
commit msg: Linux 5.10-rc7
crash: kernel BUG at fs/reiserfs/prints.c:LINE!
REISERFS panic (device loop4): journal-2332 do_journal_end: Trying to log block 8211, which is a log block
------------[ cut here ]------------
kernel BUG at fs/reiserfs/prints.c:390!
invalid opcode: 0000 [#1] PREEMPT SMP
CPU: 1 PID: 8870 Comm: syz-executor.4 Not tainted 5.10.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__reiserfs_panic.cold.17+0x25/0x6d fs/reiserfs/prints.c:390
Code: e8 98 93 14 00 4d 85 e4 48 c7 c2 fd 99 7c 84 74 49 49 c7 c0 80 31 c1 86 4c 89 e9 4c 89 e6 48 c7 c7 04 af 4d 84 e8 e7 36 ff ff <0f> 0b 4d 85 e4 48 c7 c1 fd 99 7c 84 74 2e 48 8d b3 a8 06 00 00 49
RSP: 0018:ffffc90000e87d10 EFLAGS: 00010246
RAX: 000000000000006a RBX: ffff888120879000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff84725ace RDI: 00000000ffffffff
RBP: ffffc90000e87d78 R08: 0000000000000001 R09: 0000000000000001
R10: ffffc90000e87b40 R11: ffffc90000e87b38 R12: ffffffff844dc20f
R13: ffffffff83a62be8 R14: 0000000000002013 R15: ffff888120879000
FS:  0000000002217940(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe3b130fc8 CR3: 000000010c81c000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_journal_end+0xdf8/0xe70 fs/reiserfs/journal.c:4135
 reiserfs_sync_fs+0x66/0x80 fs/reiserfs/super.c:78
 __sync_filesystem fs/sync.c:39 [inline]
 sync_filesystem+0x35/0x80 fs/sync.c:64
 generic_shutdown_super+0x1d/0x100 fs/super.c:448
 kill_block_super+0x1c/0x40 fs/super.c:1446
 deactivate_locked_super+0x24/0x60 fs/super.c:335
 cleanup_mnt+0xb3/0x140 fs/namespace.c:1118
 task_work_run+0x68/0xb0 kernel/task_work.c:151
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:164 [inline]
 exit_to_user_mode_prepare+0x1b5/0x1c0 kernel/entry/common.c:191
 syscall_exit_to_user_mode+0x38/0x260 kernel/entry/common.c:266
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x4608e7
Code: 64 89 04 25 d0 02 00 00 58 5f ff d0 48 89 c7 e8 2f be ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffe3b131788 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00000000004608e7
RDX: 00000000004031f8 RSI: 0000000000000002 RDI: 00007ffe3b131830
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000009
R10: 0000000000000005 R11: 0000000000000246 R12: 00007ffe3b1328c0
R13: 0000000002218a60 R14: 0000000000000000 R15: 00007ffe3b1328c0
Modules linked in:
---[ end trace fc412e9cea26c096 ]---
RIP: 0010:__reiserfs_panic.cold.17+0x25/0x6d fs/reiserfs/prints.c:390
Code: e8 98 93 14 00 4d 85 e4 48 c7 c2 fd 99 7c 84 74 49 49 c7 c0 80 31 c1 86 4c 89 e9 4c 89 e6 48 c7 c7 04 af 4d 84 e8 e7 36 ff ff <0f> 0b 4d 85 e4 48 c7 c1 fd 99 7c 84 74 2e 48 8d b3 a8 06 00 00 49
RSP: 0018:ffffc90000e87d10 EFLAGS: 00010246
RAX: 000000000000006a RBX: ffff888120879000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff84725ace RDI: 00000000ffffffff
RBP: ffffc90000e87d78 R08: 0000000000000001 R09: 0000000000000001
R10: ffffc90000e87b40 R11: ffffc90000e87b38 R12: ffffffff844dc20f
R13: ffffffff83a62be8 R14: 0000000000002013 R15: ffff888120879000
FS:  0000000002217940(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000a3c50a CR3: 000000010c81c000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400